| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| #pragma once |
| |
| #include <math.h> |
| |
| #include "macro.h" |
| |
| /* On some optimization level, iszero(x) is converted to (x == 0.0), and emits warning -Wfloat-equal. |
| * The argument must be a floating point, i.e. one of float, double, or long double. */ |
| #define iszero_safe(x) (fpclassify(x) == FP_ZERO) |
| |
| /* To avoid x == y and triggering compile warning -Wfloat-equal. This returns false if one of the argument is |
| * NaN or infinity. One of the argument must be a floating point. */ |
| #define fp_equal(x, y) iszero_safe((x) - (y)) |
